Atlantic Alfea Evolution 5 - Page 17

2.6.4 Creating the arings
- Cut the pipe to an appropriate length with a pipe-cutter
without deforming it.
- Carefully deburr it, holding the pipe towards the bottom
to avoid introducing lings into the pipe.
- Remove the ared connection nut situated on the
valve to be connected and slip the pipe into the nut.
- Proceed to are, letting the pipe overow the aring
tool.
- After aring, check the condition of the working radius
(L). This must not show any scratch or trace of any
fracturing. Also check the dimension (B).
Flaring tool
Hose
Flare
nut
B
L
C
ø hose Dimensions in mm
L B
0
/
-0,4
C
6,35 (1/4") 1,8 to 2 9,1 17
9,52 (3/8") 2,5 to 2,7 13,2 22
12,7 (1/2") 2,6 to 2,9 16,6 26
15,88 (5/8") 2,9 to 3,1 19,7 29
4
3
B
3
B
gure 17 - Removing the left-hand panel
2.6.5 Shaping the refrigeration pipes
The refrigeration pipes must be shaped only on a
bending machine or with a bending spring in order to
avoid any risk of crushing or breaking them.
" Warning !
• Remove the insulation material locally to bend the
pipes.
• Do not bend the copper to any angle over 90°.
• Never bend pipes more than 3 times in the same
position otherwise traces of fracturing may appear
(from strain-hardening the metal).
2.6.6 Connecting the ared connections
" Take particular care positioning the tube
opposite its connector so as not to risk damaging
the threads. A carefully aligned connector can
be tted easily by hand without much force
being required.
" The refrigeration circuit is very sensitive to dust
and humidity: check that the area around the
connection is clean and dry before removing the
plugs protecting the refrigeration connectors.
- Depending on the case, connect an adapter (reducer)
1/4''- 3/8'' or 1/2''- 5/8' (see gure 18).
- Remove the plugs from the pipes and the refrigeration
connections.
- Present the pipe to the ared connector and screw the
nut by hand while holding the connector with a wrench
until contact.
- Warning! Do not position the gas tube in front of the
circulation pump cleaning screw.
- Comply with the indicated tightening torques.
gure 18 - Tightening torque
Designation Tightening torque
Flare nut 6,35 mm (1/4") 14 to 18 Nm
Flare nut 9,52 mm (3/8") 33 to 42 Nm
Flare nut 12,7 mm (1/2") 50 to 62 Nm
Flare nut 15,88 mm (5/8") 63 to 77 Nm
Plug (A) 3/8", 1/4" 20 to 25 Nm
Plug (A) 1/2" 25 to 30 Nm
Plug (A) 5/8" 30 to 35 Nm
Plug (B) 3/8", 5/8" 10 to 12 Nm
Plug (B) 1/2", 1/4" 12,5 to 16 Nm
Holding wrench
Torque wrench
Installation and operation manual "1397 - EN" - 17 -
Heat pump split single service alféa Evolution